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Author Topic: Sigma 24mm f/1.4 DG HSM Art Coming in October  (Read 41964 times)

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Sigma 24mm f/1.4 DG HSM Art Coming in October
« on: April 23, 2014, 05:08:58 AM »
Sigma is planning to announce a 24mm f/1.4 DG HSM Art series lens at Photokina with availability coming in October of 2014.

There has been no word on the possible 85mm f/1.4 DG HSM Art or 135mm f/1.8DG HSM Art lenses. I think both the 85 and 135 would be more highly desired than a 24mm prime, though if it’s as good as the 35mm or 50mm, we’ll take it anyway.

Preorder the Sigma 50mm f/1.4 Art: Amazon | B&H Photo | Adorama

Source: [PR]

cr

« Last Edit: April 23, 2014, 06:09:21 AM by Canon Rumors »
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Sigma 24mm f/1.4 DG HSM Art Coming in October
« on: April 23, 2014, 05:08:58 AM »

Woody

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #1 on: April 23, 2014, 05:30:04 AM »
2014 is turning to be the Year of the Lens...



...for SIGMA.  ;D

brad-man

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #2 on: April 23, 2014, 05:57:29 AM »
Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

Must wait for the 85...


     
« Last Edit: April 23, 2014, 06:32:53 AM by brad-man »

lycan

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #3 on: April 23, 2014, 06:04:14 AM »
Sigma, 500mm come on...

Lightmaster

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #4 on: April 23, 2014, 06:12:43 AM »
Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.


Eldar

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #5 on: April 23, 2014, 06:33:01 AM »
people pay 4000$ for non AF lens with only marginal better image quality.
i say sigmas AF in the new lenses is pretty good for the money.
If I can't trust it, it's worthless.
Canonite and Zeissoholic ...

Bob Howland

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #6 on: April 23, 2014, 07:44:37 AM »
Wild guess: Sigma will also introduce the current 85 f/1.4 in ART configuration at Photokina, but is keeping quiet about it to avoid damaging sales of their current lens. The 135 will have to wait a while, since it is a brand new lens.

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #6 on: April 23, 2014, 07:44:37 AM »

Lightmaster

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #7 on: April 23, 2014, 07:53:33 AM »
Quote
With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?

well that´s obvious not?

the camera had to know if you moved it.
that would mean constant focusing all the time.

otherwise the camera does not "know", if the focus it is set too is the correct focus.

and to know if it has achived optimum focus ist has to have a something it can measure against. that´s why it has to move the focus. 

« Last Edit: April 23, 2014, 07:56:20 AM by Lightmaster »

CANONisOK

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #8 on: April 23, 2014, 07:55:26 AM »
With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?
That part of the focusing algorithm is necessary because your camera has no knowledge that it hasn't moved or whatever you are shooting hasn't moved. It may have GPS in some models, but I've yet to hear of one with gyroscopes, accelerometers, and radar.  ;D

Edit: I see Lightmaster was thinking the same thing I was. Great minds think alike!
« Last Edit: April 23, 2014, 07:57:30 AM by CANONisOK »
A few bodies, some flashes, a tripod here and there, a handful of lenses. Plenty of equipment, a lot of perseverance, but not enough talent (yet).

ksagomonyants

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #9 on: April 23, 2014, 08:28:44 AM »
2014 is turning to be the Year of the Lens...



...for SIGMA.  ;D

The 2014 doesn't end in April  :P

KarstenReis

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #10 on: April 23, 2014, 08:28:55 AM »
How quickly "new" Sigma's reputation went downhill.  The 35A was hailed a great lens and now a lot of forum members seem to be bashing the 50A before they get their hands on a copy.  And now some are already saying that this will have poor autofocus performance.  I am quite excited for this lens for night and astro as the Canon 24L has more coma than I would like for star shots. 

docsmith

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #11 on: April 23, 2014, 08:29:14 AM »
Yup. Too bad it won't auto focus good enough to hit the broad side of a galaxy ;D

Must wait for the 85...

When I read back over TDP's review of the S50A and I think to myself on how to obtain the best focus using a tripod, using the AF from the camera with phase detect focusing is not how I'd do it.

With Canon lenses mounted on a Canon camera, I've watched it focus on something and lock, then I press the focus button again, it de-focuses and refocuses again. Why can't it just "know" that it has acquired focus and not move the second time?

Likely, the camera needs more than one data point to optimize/determine focus.  With Phase detect, it could be that OoF is used to define what is in focus.

pwp

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #12 on: April 23, 2014, 08:33:25 AM »
I say Sigmas AF in the new lenses is pretty good for the money....
If I can't trust it, it's worthless.
That was how I felt with the erratic and occasionally brilliant old model Sigma 50mm f/1.4.
My two copies got used for some personal work, endless testing but simply couldn't be trusted for client work. Therefore ultimately worthless.

I truly hope Sigma finds an AF fix for the new lenses deliverable via firmware. The optics are clearly awesome, but without dependable AF they're a commercial no-go.

-pw

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #12 on: April 23, 2014, 08:33:25 AM »

infared

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #13 on: April 23, 2014, 08:54:36 AM »
Was there any mention of any of the reviewers of the 50mm Art f/1.4 running their test lens thru this process???
http://www.lensrentals.com/blog/2013/06/sigma-optimization-pro-and-usb-dock

I think that Roger is very professional and very reliable...and he seems to think the dock and the software are a valuable tool.  I just wonder if Brian at the Digital Pic had run the lens thru the software after his preliminary test to see if his copy tested any better????

I would like to see Dustin Abbott get his hands on a retail copy of the Sigma Art 50mm and a Dock and give us his input.  Can that happen!?!?!?!?!?!?
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Orangutan

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #14 on: April 23, 2014, 09:04:17 AM »
well that´s obvious not?

the camera had to know if you moved it.
that would mean constant focusing all the time.

otherwise the camera does not "know", if the focus it is set too is the correct focus.

and to know if it has achived optimum focus ist has to have a something it can measure against. that´s why it has to move the focus.
I was about to respond that what you describe sounds like contrast-detect focus, not phase-detect focus, but then I figured: I'll just wait for Neuro to respond: he probably has already researched the problem and filed a patent application for it.   ;D

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Re: Sigma 24mm f/1.4 DG HSM Art Coming in October
« Reply #14 on: April 23, 2014, 09:04:17 AM »